OUTLINE: This is a multicenter study. Patients receive PNU-93914 IV over 60 minutes on day 1. Treatment repeats every 21 days for at least 2 courses in the absence of disease progression or unacceptable toxicity. Quality of life is assessed at baseline, day 1 of each course, and then at the final study visit. Patients are followed every 3 months for up to 2 years.